Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
  • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
  • H04M17/026—Constructional features

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Computer Security & Cryptography (AREA)
• Signal Processing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6581840

Family Applications (1)

Country Status (3)

• 0
  • BE BE350899D patent/BE350899A/xx unknown
  • NL NL25678D patent/NL25678C/xx active
• 1928
  • 1928-04-28 FR FR653547D patent/FR653547A/fr not_active Expired

Also Published As

Similar Documents